We present here an inventory of the medicinal plants of Bulamogi county in Uganda, including their medicinal use, preparation and administration modes. Fieldwork for this study was conducted between June 2000 and June 2001 using semi-structured interviews, questionnaires, and participant observation as well as transect walks in wild herbal plant collection areas. We recorded 229 plant species belonging to 168 genera in 68 families with medicinal properties. A large proportion of these plants are herbaceous. The medicinal plants are mainly collected from the wild. Some species, such as Sarcocephalus latifolius (Smith) Bruce, are believed by the community to be threatened by unsustainable intensities of use and patterns of harvesting. Particularly vulnerable are said to be the woody or the slow growing species. Herbal medicines are prepared as decoctions, infusions, powders, or as ash, and are administered in a variety of ways. Other concoctions consist of juices and saps. The purported therapeutic claims await validation. Validation in our opinion can help to promote confidence among users of traditional medicine, and also to create opportunities for the marketing of herbal medicines and generate incomes for the community. The processing, packaging and storage of herbal medicines is substandard and require improvement.